News

430 Mini cats cell fix for aftermarket F430 manifolds / headers replacement

Discussion in '360/430' started by Testarossa13, Jan 2, 2020.

  1. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,007
    Northern California
    Full Name:
    Greg Calo
    This is indeed great to know if it does work

    However, every time I have gone for smog the tester looks for the pre-cats!

    So I assume that the CARB device indicates to tester to check for those pre-cats?

    If, however, this can be diverted then that's great news
     
  2. To remove this ad click here.

  3. Ray Smith

    Ray Smith Formula Junior
    Silver Subscribed

    May 17, 2020
    648
    Costa Mesa, CA
    Full Name:
    Raymond Smith
    How do they look for pre-cats? And why would they? Not all cars have pre-cats, they achieve air quality with single converters.

    Years ago (mid-2000s) they would put a probe in the tailpipe. This probe sampled the exhaust gasses and the computer analyzed the results for a pass/no pass verdict. They no longer put a probe into the tailpipe. They simply plug into the OBDII port and check for error codes concerning emissions. My last SMOG check I was prepared to wait 15-20 minutes for the results. I had just put in my ear buds when the technician announced I was good to go.

    Ray
     
  4. mike32

    mike32 F1 Rookie

    May 13, 2016
    3,315
    Uk
    My 430 runs a Capristo manifold set and never needed these mini cats- you need to start car up from cold with feet off the accelerator until the sensors get hot enough to burn off any fuel droplets. Blipping the throttle when they are too cool gets fuel deposited on the sensor and a code. With OEM manifolds you have pre cats which deals with droplets before they get to the sensor. Not had a code in 4 years.
     
  5. RichardCH

    RichardCH F1 Rookie
    Silver Subscribed

    Jan 16, 2005
    4,641
    interesting thks as most of us start the car with a foot on the gas pedal depressed
     
  6. Ray Smith

    Ray Smith Formula Junior
    Silver Subscribed

    May 17, 2020
    648
    Costa Mesa, CA
    Full Name:
    Raymond Smith
    I never touch the throttle when I start the car, a habit I picked up from years of driving EFI Corvettes. The system manages throttle settings at start up better than I can.

    That is good news. I hope you have continued success with your Capristo system.

    Ray
     
  7. To remove this ad click here.

  8. mike32

    mike32 F1 Rookie

    May 13, 2016
    3,315
    Uk
    Fine when its hot but lots of unburnt fuel about in first minute or so, a sensor drowned in fuel ??
     
    Ray Smith likes this.

Share This Page